A plastic light-changing agricultural film with long-lasting light-changing effect and preparation method thereof

A light-converting agricultural film and long-lasting technology, applied in the field of plastic light-converting agricultural film and its preparation, can solve the problems of affecting the appearance and smoothness of the product, reducing the light-conversion efficiency of the film, and poor uniformity of the film, so as to achieve a lasting light-conversion effect and a good appearance finish. , excellent water resistance

Active Publication Date: 2021-11-05
山东隆昌新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] According to the above, although the pure inorganic rare earth light conversion agent in the existing scheme has improved the light conversion intensity and service life, there are still some defects, such as poor photostability, fast light conversion attenuation, and light transmittance decrease with time. , especially the poor dispersion of ordinary inorganic salts in polymer films, which makes the uniformity of the formed film poor, not only affects the appearance of the product, but also leads to rare earth agglomeration and reduces the light conversion efficiency of the film

Method used

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  • A plastic light-changing agricultural film with long-lasting light-changing effect and preparation method thereof
  • A plastic light-changing agricultural film with long-lasting light-changing effect and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Mix liquid glass and deionized water, stir well to form a uniform system, then add inorganic rare earth light conversion agent and ceramic microspheres into the system and soak for 1.5h, stir evenly to prepare a slurry, and then move the slurry into a pressure spray In the spray granulation of the dryer, the particles were collected and washed with absolute ethanol for 3 times, then heated and dried at 110°C for 1.5h, and the inorganic rare earth light conversion agent was fixed on the surface of the ceramic microspheres through the solidification process of liquid glass to obtain Composite inorganic rare earth light conversion agent; the inorganic rare earth light conversion agent is yttrium-europium oxysulfide; the ceramic microspheres are alumina ceramic microspheres; during the spray granulation process, the heat source temperature of the pressure spray dryer is 185°C, and the outlet temperature is 150℃, the pump pressure is 1.5MPa;

[0029] The raw material com...

Embodiment 2

[0033] (1) Mix liquid glass and deionized water, stir well to form a uniform system, then add inorganic rare earth light conversion agent and ceramic microspheres into the system and soak for 1 hour, stir evenly to prepare slurry, and then move the slurry into pressure spray drying In the spray granulation of the machine, the particles are collected and washed twice with absolute ethanol, and then heated and dried at 105°C for 2 hours, and the inorganic rare earth light conversion agent is fixed on the surface of the ceramic microsphere through the solidification process of the liquid glass to obtain a composite inorganic Rare earth light conversion agent; the inorganic rare earth light conversion agent is yttrium-europium oxysulfide; the ceramic microspheres are silica ceramic microspheres; during the spray granulation process, the heat source temperature of the pressure spray dryer is 185°C, and the outlet temperature is 130°C ℃, the pump pressure is 1.2MPa;

[0034] The raw...

Embodiment 3

[0038] (1) Mix liquid glass and deionized water, stir well to form a uniform system, then add inorganic rare earth light conversion agent and ceramic microspheres into the system and soak for 2 hours, stir evenly to prepare slurry, and then move the slurry into pressure spray drying In the spray granulation of the machine, the particles were collected and washed with absolute ethanol four times, and then heated and dried at 115°C for 1 hour, and the inorganic rare earth light conversion agent was fixed on the surface of the ceramic microsphere through the solidification process of the liquid glass to obtain a composite inorganic Rare earth light conversion agent; inorganic rare earth light conversion agent is yttrium-europium oxysulfide; ceramic microspheres are silicon carbide ceramic microspheres; during the spray granulation process, the heat source temperature of the pressure spray dryer is 195°C, and the outlet temperature is 150°C , the pump pressure is 1.8MPa;

[0039] ...

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Abstract

The invention relates to the field of agricultural films, and discloses a plastic light-converting agricultural film with a long-lasting light-converting effect and a preparation method thereof. The preparation process includes the following preparation process: (1) mixing liquid glass, deionized water, inorganic rare earth light conversion agent and ceramic microspheres to prepare a slurry, and then spraying and granulating to obtain a composite inorganic rare earth light conversion agent; (2) compounding Inorganic rare-earth photoconversion agent is mixed evenly with matrix resin, plasticizer and antioxidant, and then the film is blown with a film blowing machine to obtain a plastic light-converting agricultural film with a long-lasting light-converting effect. The spherical composite inorganic rare earth light conversion agent obtained by the invention is beneficial to uniform dispersion in the film matrix, is not easy to cause agglomeration, improves fluidity, has good compatibility with matrix resin, stable chemical properties, no precipitation on the surface, good appearance smoothness, and water resistance. Excellent, long-lasting light conversion effect, the obtained agricultural film with excellent uniformity, effectively improves the light conversion efficiency of plastic light conversion agricultural film, and has a wide range of applications.

Description

technical field [0001] The invention relates to the field of agricultural films, and discloses a plastic light-converting agricultural film with a long-lasting light-converting effect and a preparation method thereof. Background technique [0002] In recent years, the functionalization and high performance of agricultural film in my country have increasingly become the mainstream of agricultural film development. The design principle of light conversion of agricultural film is based on the principle of photoecology, introducing a light conversion agent into the agricultural film to realize light energy conversion, so as to improve the light quality transmitted by the plastic shed greenhouse and improve the comprehensive utilization rate of light energy. Compared with ordinary membranes and existing functional membranes, it has more obvious advantages in terms of crop yield increase, early maturity, and quality improvement. [0003] The light conversion function of the light...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L23/12C08L27/06C08K9/12C08K3/30C08K3/24C08K3/22C08K3/34C08J5/18A01G9/14
CPCA01G9/1438C08J5/18C08J2323/06C08J2323/12C08J2327/06C08K3/22C08K3/24C08K3/34C08K9/12C08K2003/3009Y02A40/25
Inventor 吴广龙
Owner 山东隆昌新材料科技股份有限公司
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